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A longitudinal study on the effect of obesity upon circulating renin-angiotensin system in normal pregnancy.
Bernardi, Stella; Tonon, Federica; Barbieri, Moira; Zamagni, Giulia; Nuredini, Roberto; Perer, Laura; Comar, Sarah; Toffoli, Barbara; Ronfani, Luca; Ricci, Giuseppe; Fabris, Bruno; Stampalija, Tamara.
Affiliation
  • Bernardi S; Department of Medical Surgical and Health Sciences, University of Trieste, 34149, Trieste, Italy; Unit of Endocrinology, ASUGI, Cattinara Teaching Hospital, 34149, Trieste, Italy. Electronic address: stella.bernardi@units.it.
  • Tonon F; Department of Medical Surgical and Health Sciences, University of Trieste, 34149, Trieste, Italy.
  • Barbieri M; Department of Medical Surgical and Health Sciences, University of Trieste, 34149, Trieste, Italy.
  • Zamagni G; Clinical Epidemiology and Public Health Research Unit, Institute for Maternal and Child Health IRCCS "Burlo Garofolo", 34147, Trieste, Italy.
  • Nuredini R; Department of Medical Surgical and Health Sciences, University of Trieste, 34149, Trieste, Italy.
  • Perer L; Department of Medical Surgical and Health Sciences, University of Trieste, 34149, Trieste, Italy.
  • Comar S; Department of Medical Surgical and Health Sciences, University of Trieste, 34149, Trieste, Italy.
  • Toffoli B; Department of Medical Surgical and Health Sciences, University of Trieste, 34149, Trieste, Italy.
  • Ronfani L; Clinical Epidemiology and Public Health Research Unit, Institute for Maternal and Child Health IRCCS "Burlo Garofolo", 34147, Trieste, Italy.
  • Ricci G; Department of Medical Surgical and Health Sciences, University of Trieste, 34149, Trieste, Italy; Department of Obstetrics and Gynaecology, Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", 34137, Trieste, Italy.
  • Fabris B; Department of Medical Surgical and Health Sciences, University of Trieste, 34149, Trieste, Italy; Unit of Endocrinology, ASUGI, Cattinara Teaching Hospital, 34149, Trieste, Italy.
  • Stampalija T; Department of Medical Surgical and Health Sciences, University of Trieste, 34149, Trieste, Italy; Unit of Fetal Medicine and Prenatal Diagnosis, Institute for Maternal and Child Health IRCCS Burlo Garofolo, 34137, Trieste, Italy.
Nutr Metab Cardiovasc Dis ; 34(3): 771-782, 2024 03.
Article in En | MEDLINE | ID: mdl-38161127
ABSTRACT
BACKGROUND AND

AIMS:

Obesity is the most common health issue in women of reproductive age, which profoundly affects maternal-fetal health. Despite progress in understanding key inflammatory and metabolic changes, the pathogenesis of the cardiovascular phenotype of obese pregnant women remains to be fully understood. This study aimed at (i) evaluating the changes of the renin-angiotensin system (RAS) throughout pregnancy in obese vs normal weight (control) women, and (ii) evaluating the presence of any associations between maternal hemodynamic status and RAS changes. METHODS AND

RESULTS:

Thirty-eight normal weight and nineteen obese pregnant women were included. Clinical assessment, blood samples and maternal hemodynamic evaluation were performed at 12, 20, 30, and 36 weeks, while ultrasound assessment was scheduled at 20, 30, and 36 weeks of gestation. Measurements of sFlt-1, PlGF, Angiotensinogen, Renin, AngII, Ang1-7, ACE and ACE2 were performed by ELISA. Our data show that normotensive obese women had lower placental blood supply, as assessed by UV-Q and UV-Q/EFW, as compared to controls, and significantly higher levels of AngII and AngII/Ang1-7 ratio, which were inversely related to placental blood supply.

CONCLUSIONS:

Our study shows for the first time that normotensive obese women exhibited a significant progressive increase of AngII and AngII/Ang1-7 throughout pregnancy, which were inversely related to placental blood supply as assessed by UV-Q and UV-Q/EFW. Our data shed light on the early changes in pregnant obese women and suggest that RAS dysregulation is a prerequisite rather than a consequence of hypertensive disorders of pregnancy and other maternal neonatal complications.
Subject(s)
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Renin-Angiotensin System / Angiotensinogen / Renin / Obesity, Maternal Limits: Female / Humans / Newborn / Pregnancy Language: En Journal: Nutr Metab Cardiovasc Dis Journal subject: ANGIOLOGIA / CARDIOLOGIA / CIENCIAS DA NUTRICAO / METABOLISMO Year: 2024 Document type: Article Country of publication: Países Bajos

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Renin-Angiotensin System / Angiotensinogen / Renin / Obesity, Maternal Limits: Female / Humans / Newborn / Pregnancy Language: En Journal: Nutr Metab Cardiovasc Dis Journal subject: ANGIOLOGIA / CARDIOLOGIA / CIENCIAS DA NUTRICAO / METABOLISMO Year: 2024 Document type: Article Country of publication: Países Bajos